Heating device



Oct. 11, 1932. LEE 1,881,722

HEATING DEVICE Filed OC'E. 23, 1929 Patented Oct. '11, 1932 PATENT OFFICE mam I. L, ZION, ILELIIOIB HEATING DEVICE Application fled October 1929. Serial No. 401,717.

This invention relates to improvements in heating devices and, more especially, such a device adapted for warming the 011 m the crank case of an automobile.

My heating device is an improvement on that shown in Patent No. 1,356,524 of October 26, 1920, anted to A. H. Grange.

The principal feature of my invention is the provision of means in connection with 0 such a heater to permit the'same to be operated by the startlng and lighting battery of man an automobile, which is or y six volts,

or b the common house lighting circuit whic is ordinarily one hundred and ten 5 volts. Because of the eat dlfierence in voltage of such circuits 1t is not feasible to operate a single heater from botlr unless special provision is made to permit th 1s. In many instances, when such a heater is most needed, the car is standing in a garage where a power line is available. In such cases, the car battery can be spared if current from the ower line can be used. If the heater can e operated only by a one hundred and ten 5 volt current, however, there may be times when current from the car battery is the only power available; and in such cases,'the heater is useless unless six volts can be used to operate it. By the use of my invention,

either source of current can be used.

Another feature is the provision or improved means for mounting the heater in the crank case.

Other features and advantages of my in: vention will a pear more fully as I proceed with my speci cation.

In that form of device embodying the "Zea-- tures of my invention shownin the accompanying drawinga Figure 1 is a view in side elevation show ing a part of the crank case of an automobile broken away; Fig. 2 is a view in perspective of the heater removed from the crank case,

showing portions in section; and Fig. 8 is a wiring diagram.

As shown in the drawin 1 indicates heating element which may oi? almost any form and is here shown as rectangular and flat. The heating element is mounted in the 30 lower part of the crank case 2 oi the internal combustion engine, preferably close to the. oil strainer 3, the latter havin the usual pipe connection 4 to the oil pump not shown).

The heating element may be held in lace in any suitable manner. For example, ave here shown itas provided with a pipe 5, the end of which is threaded, as indicated by 5'. The end of the pipe 5 is inserted through a suitable hole in the wall 2 of the crank case and held firmly by the two lock nuts 6, 6 so screwed ti htly against the wall, one on the outside an one on the inside. Suitable packmg (not shown) may be used to assist in making an oil-tight joint.

In order to permit the heater to be operated by either a six volt or a one hundred and ten volt current, the same is provided with two resistance elements, 7 and 8 with separate circuits. The element 7,-for example, may be adapted for, six volts and the other for one hundred and ten volts. The elements may be made of any suitable material, for example, nichrome ribbon or wire. The elements may be separated by a sheet of mica 9 and similar sheets 10, 10, may be provided on the outside to insulate the elements from the casing if" of the element.

The tube 5 may serve as a conduit from the leads to the resistance elements. The wires ll, 11 from the element 8 ma he provided with an "Edison type plug 12 a l anted for insertion in the usuhl socket oi a power lighting circuit. The wires attached to the element 7 are indicated by 14 and 15, the former leading to ground 16 and the la ter to a suitable switch It? which, in turn, may he supplied with current through the wire 18 connected to the aster A. of the car. lfn the case shown, the ammeter is supplied in the usual manner "from the car battery 19. a

While I have shown and described certain embodiments of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of my invention as disclosed in the appended claim, in which it is my intention to claim all novelty inherent in my invention as broadly as permissible, in view of the prior art. 1

What I regard as new, and desire to secure by Letters Patent, is:

In combination with an internal combustion motor; a crank case for the motor having a hole in one side Wall said hole being spaced above the bottom 01% the crank case; an electric heating element in the crank case arran ed adjacent the bottom thereof and provi ed with a tubular member extending through the hole in the wall, said tubular member having suficient length to space the heatin element a substantial distance from the si e Wall with the hole therein 5 means for retaining the tubular member in positien including a lock nut thereon adapted to e screwed against the side Wall or the nk case; an electric resistance element 1. the heating element; and conducting Wires inected to the resistance element, said. .7ilfi$ passing through the tubular member the outside of the crank case.

In Witness Whereerf I have hereunto set hand. and seal this of @etoher, 

